Squirt-preventer for type-casting machines.



No. 702,941. Patented lune 24, |902. G. A. GODDSON.

SGUIBT PREVENTER FDR TYPE CASTING MACHINES.

(Application med Apr. 22, 1901i) (No Model.) 4 Sheets-Sheet I.

Patented lune 24, |902.

- G. A. Goonson.

SUUIRT PREVENTEB FOB TYPE. CASTING MACHINES.

(Application led Apr. 22, 1901.)

4 Shania-Sheet 2 (No Model.)

Zzwossas, J M17 26?,

C. b. N. o T G Nonms paens co. pHoro-Ln- No. 702,941. Patented lune 24,|902. G. A. GUUDSUN.

SUIRT PREVENTER FOB TYPE CASTING MACHINES.

(Application filed Apr. 22, 1901.) (No Model.) 4 Sheets-Sheet 3.

Patented June 24, |902.

No. 702,94I.

G. A. GDSON.

SllUlRT PREVENTER FOB TYPE CSTING MACHINES.

(Application led Apr. 22, 1901.)

4 Sheets-Sheet 4,

(No Model.)

UNrrED STATES PATENT OFFICE.

GEORGE ARTHUR GOODSON, OF NEW YORK, N. Y.

SQUlRT-PREVENTER FOR TYPE-CASTING MACHINES.

SPECIFICATION forming part of Letters Patent No. 702,941, dated June 24,1902.

Application filed April 22,1901. Serial No. 56,871. (No model.)

ib f/,ZZ 7071/0771, it muy concern:

Beit known that l, GEORGE ARTHUR GOOD- SON, a citizen of GreatBritain,residing at New York, in the county of New York and State of NewYork, have invented certain new and useful Improvements inSquirt-Preventers for Type-Casting Machines; and I do hereby declare thefollowing to be a full,clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to type-casting machines, and has for its object toprovide certain improvements therein with a View of securing increasedefficiency.

In type-casting machines the matrix and the body-mold are movablerelative to each other, and when tightly clamped together in castingposition the molten metal is forced into the mold-cell under pressure,which is usually done by a suitable pump. The matrix and the mold mustbe centered with great accuracy in casting position and must be tightlyclamped together with a perfect joint between the matrix and the mold,or otherwise satisfactory results cannot be secured. If the matrix andthe mold do not make a perfectjoint with each other,then when the pumpis actuated to effect the cast the molten metal will be forced out atthe open joint between the matrix and the mold with what thetypefounders call a squirt or a slobben W'hen such a squirt or slobberoccurs, the type of course will be imperfect and worthless, and thetype-metal thus thrown out between the matrix and the mold must becleared away from both before further successful casting of perfect typecan be done. This is of course a serious limitation or objection totype-casting machines. Vhen the squirt or slobber occurs, the machinemust of course be stopped to clear away the debris, and ofttimes loss isincurred not only in point of time as to the continuous action of themachine, but also as to type already made and set in a partial line, forexample.

My invention has for its object to overcome this defect or limitation,and to this end I provide a lock for the pump which under thecooperative control of the matrix and the mold will become operative tolock the pump in au idle position, and thereby prevent any cast wheneverthe matrix and the mold fail to make a perfect joint when clampedtogether in casting position. Normally the lock is inoperative or idleand so continues as long as the matrix and mold make a perfect jointwhen clamped together in casting position; but if any obstruction-suchas a broken type, chip of type-metal, or grain of sand--should happen toget interposed between the faces of the matrix-walls and the mold thenit will be impossible for the clamping devices to bring the matrix andthe mold into their normal or properly-jointed casting position, and thepump-lock will then become opera-tive to prevent any cast.

The invention was especially designed for use on what is known to thetrade as the Goodson type casting and setting machine, which machine isdisclosed in my various prior United States patents. Said machine isdisclosedA most nearly in its commercial form in my prior patent, No.609,098, of date August 16, 1898, and my invention herein disclosed,which I call squirt-preventer, is

disclosed as applied to the machine as disclosed in my said Patent No.609,098.

. The invention is illustrated in the accompanying drawings, whereinlike notations refer to like parts throughout the several views.

In said drawings, Figure l is a perspective View showing some of theparts of my type casting and setting machine with my present inventionembodied therein. Fig. 2 is alongitudinal vertical section through themachine in a plane cutting the matrix-block, the mold, and themelting-pot. Fig. 3 is a detail, partly inv horizontal section andpartly in plan, illustrating the devices which act from below to elevatethe mold carriage or slide and the nipple carriage or s lide and tocooperate with the devices which act from above to clamp the matrix ,andthe mold tightly together in casting position. Fig. Lt is a view invertical longitudinal section in the same planeV as Fig. 2 and showingsome of the same parts, but on a larger scale and in adierent position.Figs. 5 and 6 are details in elevation and cross-section, respectively,illustrating the adjustable fulcrumpin for the top lever of thesquirt-preventer.

Fig. 7 is a detail in vertical section, taken crosswise of the machineon the line m7 :1:7 of

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. mal position.

Fig. 4, showing the pump-locking lever and some of the cooperating partsin their nor- Fig. 8 is a similar view, but showing the same parts asthey appear when in pump-locking position. Fig. 9 is a'view similar toFigs. 7 and 8, but with the parts as they would appear when an excessivemotion had been im parted to some of the parts of the squirt-preventerby an obstruction of unusual size coming between the matrix and themold.

Before specifying in detail the parts of my squirt-preventer as hereindiscloseditis necessary to briefly note some of the operative parts ofthe old structure of the machine to which it is applied.

Paris of lmachine as disclosed n Patent No. 609,098, of August 16,1898,-These old parts are marked with the same reference-notations as insaid prior patent. The main frame a, of box-like form, has on its mainbed-plate a central casting d4, on which most of the operative partsrequiring notice herein have their bearings. In addition the bed-platect has a bracket ct to serve as a bearing for pump-lever fm, as willlater appear. The constantly-running driving-shaft b is -provided withsuitable cams, and of these it is sufficient for present purposes toconsider two-to wit, the cams numbered l and 4 in said prior patent, andthese only are shown in the drawings.

The type-metal is kept in a molten condition in a suitable meltingpotf', supported from a burner-bracketf2, which is insulated from the mainframe of the macl1ine,as shown in Fig. 2. This melting-pot is locatedremotely from the mold, and the molten metal is conducted from themelting-pot to the mold through a metallic tube f3, which termina-tes ina nipple f4, adapted when in casting position to register with the lowerend of the mouth or cellof the mold. This conductingtube f3 in practiceis connected into an electric circuit (not shown) for the purpose ofcontrolling the temperature of the molten metal and delivering the sameto the mold in exactly the right condition.

In the melting-potf is located a suitable pump, the cylinder of which ismarked and the pistonfo. The piston f1@ is connected by a pivotedplunger]11 to the horizontal arm of a bell-crank leverfg, which ispivoted to the bracket d10, hitherto noted. The said horizontal arm ofsaid lever]C12 is made in two sections suitably insulated from eachother, as shown in Fig. 2. An actuating-rod f14 is connected at its leftend to the lower end of the bell-crank level-f1?, and at its opposite orright end itis provided with aroller f, which works ina profilecam-channel fw, formed in the front face of the cam-heel l. Theright-hand or cam end of the rod f14 is shown as held up, Fig. 2, by apivoted lever f The pump-lever f12 is also subject to the action of astrong springf, acting opposite to the cam. The cam and the connectionsdescribed raise the pump-piston flo into its uppermost position and setthe strong spring f17 under tension to throw the piston flo into itslowermost position whenever so permitted by the cam, thus giving theproper pump action to effect the cast.

The nipple f4 is carried by a slide or carriage f2?, mounted forvertical movement between guides f2s, fixed to an angular bracket orcarriage g4, which in turn is mounted for vertical movement betweenguides ct, iXed to a vertical web of the central casting a4, as bestshown in Figs. 2, 3, and 4. The nippleslide j2 is provided near itslower end with a rollerfo for cooperation with the inner end of abell-crank cam-lever f 29. The cam-lever f29 is pivoted to the bed ofthe machine, as shown atfso, and the outer or long arm of the sameextends to the cam-wheel t and is subject to a prole cam-surface f31thereon and a cooperating spring fg, working opposite to the cam, asshown in Fig. 3. The nipple-slide f27 is subject to a spring fss forthrowing the same downward whenever so permitted by the cam-leverf29.The tube]03 has sufficient spring to permit the limited upand-downmotion of the nipple 4 under the action of the slide f.

The type-body mold is made up of several parts, of which the partsmarked g2 and g3 are shown in the drawings. Of said parts g2 and g3 thepair of members g2 are laterally movable on the part g3, which is ofangular form, for shifting from casting to ejecting positions by meansnot herein shown. When in casting position, the parts g2 and g3 coperatewith the mold-plunger (not shown) to afford the mold-cell g. (See Figs.2 and 4.) The angular member g3 of the mold is fixed t-o horizontalportions of the vertically-movable slide or carriage g4, hitherto notedas mounted for vertical movement between the guides ci and a verticalweb of the casting (L4. At its lower end the mold-carriage g4 isprovided with a roller gg, which is subject to the action of the inneror cam end of a bellcrank lever gl, pivoted to the bed-plate by the samepivot-pin f3 as the cam-leverflf, which operates the nipplecarriage f2?,as shown in Fig. 3. The outer or long arm of the cam-lever g7 extends tothe cam-wheel et and is subject to a profile cam-surface thereon (notshown) and is also subject to a cooperating spring g to keep the leveragainst the face of the cam. The mold-carriage g4 is subject to a pairof springs gw, tending to throw the same downward into its lowermostposition whenever so permitted by the cam -lever gi. As the angularmember g3 of the mold is fixed to the horizontal arms of the carriageg4, the mold will of course be moved up and down with said carriageunder the coperation of the cam-lever gT and the springs gw. Inasmuch asthe nipple-slidej'27, hitherto noted, must move independently on themold-carriage g4 under the coperation of its cam-lever f29 and springf33, the lever IOO IIO

fl must have a limited rocking motion at its inner or cam end, which issecured by allowing a little lost motion at its joint with thepivot-pinfo. Theinner end of the cam-lever f2 works over a cross-pieceg5, carried by the mold-carriage g4, and hence always occupies a properposition for cooperation with the roller f5 of the nipple slide orcarriage f2? in all positions of the mold-carriage gt.

The up-and-down motions of the mold secured by the devices justhereinbefore described are to enable the mold to cooperate with thematrix-block 7L at an upper level when in casting position and tocooperate with the galley-floor (not shown) at a lower level when intype-ejecting position. There is also a lateral shifting motion of theparts g2 and the mold-plunger (not shown) embraced between the same onthe angular member gs to shift the mold from casting to ejectingpositions; but it is not necessary for the purposes of this case toconsider the said lateral motions. A

The devices hereinbefore described for effecting the upward movement ofthe mold constitute portions of the clamping devices which operate frombelow on the mold and cooperate with devices which operate from above onthe matrix-block 7L to clamp the matrix and the mold in castingposition. The matrix-block 7L has matrices on its face arranged in rowsin two directions and has on its back corresponding centering-surfaces justified in two directions for permitting any desired matrix to beselected and brought to casting position by a two-way movement of theblock. For permitting these two-way movements the matrix-block 7L isdirectly mounted on a small carriage 7i', which in turn is looselymounted for transverse movement on guide-bars 712, connected at theirends to the side rails h3, and which parts h2 and 71.3.

constitute portions of the larger or main carriage, which is mounted fora forward and backward movement in suitable guideways formed in apivoted support h4. Otherwise stated, the main carriage h2 and h3 andthe small carriage 77/ for the matrix-block 7L move at right angles toeach other. The movements of these carriages are effected by positivedevices in one direction to bring the matrix-block to an initial ornormal startingpoint and set under tension suitable springs for movingthe said carriages in the opposite direction and permitting the same tobe vai riably intercepted by suitable stops in eachy of the twodirections to select the proper matrix and bring the same to castingposition. The stops for thus variably intercepting the matrix-block areoperated by armature-levers and magnets under the automatic control of apunctured representative strip. The devices for thus selecting andcentering the selected matrix in casting position are not herein shown,but are fully disclosed in my prior patents, hereinbefore identified.The said primary devices, however, bring the sezontal arm of avertically-movable plunger l 4ha), which is mounted for vertical andpivotal movements in suitable guides, one of which (marked ha) forms apart of or is fixed to the central casting a4. At its lower end theplunger 7b3 is provided with another guide 7150, which is in the form ofa shouldered bushing loosely seated in a casting 7a2, which is hollowand serves as a housing for the pump-lock lever 7o', as clearly shown inFigs. 7 `to 9, inclusive. The vertical stem of the plunger h3@ isprovided with a grooved nut or collar 7L32, which isembraced bytheforked forward end of a three-arm cam-lever hss. The cam-lever 7L33 ispivoted to the iixed structure d4 at 72.34, as shown in Fig. 2. ver 7t33stand approximately at right angles to each other and are provided withsuitable cam-rollers, which are subject in succession to the action of aperipheral cam-surface h?? on the cam-wheel 4. The stem of the plungerha() is encircled by a stiy spring 7W, reacting between the collar 7t32or a lock-nut cooperating therewith and the lower end guide 71.50 forsaid plunger. Under the action of the cam-surface h3T on the cam-Wheel4, operating in succession on the two arms ofthe cam-lever 71,33, theplunger 7130 is iirst Aforced downward against the spring 77.38, therebydepressing the spring-seated centering-pin 7128, and thus causing saidpin to center the matrix-block in casting position and then to tightlyclamp the same to the type-body mold in cooperation with the clampingdevices operating from below, as hitherto described, on the verticallymovable mold carriage g4. Later the same cam-surface hm, acting on therollerof the lower or vertical arm of the camlever 7t33, will rock thelever inthe opposite direction, and thereby force the plunger 7L3o intoits uppermost position. The spring his will assist in this action andalso serves to keep the roller of the horizontal arm of the cam-lever7t33 in contact with the camwheel 4. The plunger ho is provided withastiff flat spring 71.39, which overreaches thel loose head 7129 and hadin its original functiony to serve asa safetydevice to preventbreakageunder the clamping action of the plunger 7b3@ on the centering-pin71.28. Said springk 7L29 is strong enough to resist the required clampfling strain, but will yield, if necessary,.to.pre

ventbreakage of the parts-under thelaction. of the cam. Said spring 7L39is alsomade to* IOO .IIO

IIS

serve an additional function in respect to the top lever of mypresentinvention,or the squirt preventer herein disclosed, as will laterappear. The horizontal arm of the plunger 7L30 carries a spring-seatedkeeper 7t51, which is bifurcated at its outer end and embraces thecentering-pin 28 below the head of the pin when the parts are in workingposition. This keeper 71,01 has as its primary function to prevent thecentering-pin 7L28 from turning in its bearings and to hold the plunger77,30 from any swiveling or pivotal motion when the parts are in workingposition. Incidentally the said keeper 7151 will also serve to lift thecentering-pin 7f3 with a positive action in case the same should getstuck in its lowermost position or its retracting-spring should becomebroken. Said keeper 7L51 is adapted to be taken hold of by hand andshoved back against its spring, so as to clear the centering-pin 7l28,and thus permit the plunger to be swung laterally with a pivotal motioninto such position as to clear the underlying pivotal support h4, onwhich the matrix-carriages are mounted.

With the exception of the rollerf50 on the nipple carriage or slide, thelower or loose guide 72,50 for the plunger 7L30, and the springseatedkeeper 7L51 all the parts hereinbefore specied are identical with thecorresponding parts bearing the same reference-notations in my saidprior patent, No. 609,098.

The squrt-preoener.-I will now describe my present improvement orso-called squirtpreventer. The parts thereof are marked with thereference-letter 7c and its powers. Especial attention is called toFigs. l and 4 to 9, inclusive.

The pump-actuating rod f14 is provided with a notch 7c, as best shown inFigs. l, 7, and S, for cooperation with a latch-lever 7c. Thelatch-lever 7c is pivoted to the casting 7a2, hitherto noted, and whichis of proper construction to serve as a casing for said lever 7c' and toseat the loose or lower end guide 7L50 for the plunger 7L30. Thelatch-lever 7c' is subject to a spring 7a3, which tends to hold the saidlever 7c in its lowermost or normal position, as shown in Fig. 7. Theshort end of the lever 7c underlies a loose block 7a4, carried on thelower end of a headed rod 7d", both of which parts are seated within theplunger 7L30, the vertical stem portion of which is in this instanceformed hollow for that purpose. The loose block 7c1L is recessed topermit movement thereof on the head of the rod 754, and the lower end ofthe block 7a4 is plugged, as shown in Figs. 7, 8, and 9. The loose block7a4 is subject to a spring 750, encircling the rod 705 and reactingbetween the top of the block 7a4 and a collar 707, which may be set inany desired position on the rod 705. The upper end of the rod 765underlies a lever ks, which is suitably seated within the horizontalportion of the plunger 7100, as best shown in Fig. 4. This top lever ksis pivoted to the horizontal or arm portion of the plunger 71,30 byascrew-stud 7a0, the shank portion of which is eccentric to its head andextends through an eccentrically-located passage in a roller 7510 and issubject to a lock-nut 7c, by which construction the pivot-pin or fulcrumkf may be set in any desired adjustment in respect to the bearings forthe same aorded by the seats for the eccentrics 709 and 7&0 in thehorizontal arm of the plunger h3". The throw of the lever 7c maytherefore be nicely adjusted as required for the {necessary precision tosecure the proper action on the latch-lever 7d.

The loose head 7 20, seated in the horizontal or arm portion of theplunger 7t30, as hitherto described, is in this instance carried by theinner or short arm of the top lever 76S of the squirt-preventer. Forthis purpose the loose head 7120 is recessed or slotted to receive theend of said lever 7c3. The said parts (marked with the reference-letters7c to 7.311, inclusive) constitute the elements of the squirtpreventerand are related to each other as shown and described. The action thereofcan be readily understood.

The stiff safety-spring 71,30, fixed to the plunger 7100, with'its freeend overreaching the loose head 7L, as hitherto described, constitutesan upper end stop to the movement of said head 7220 and is sufficientlysti, as hitherto noted, to withstand the normal clamping strain which isapplied to the plunger 7t30 and through the same to the head 7W, thecentering-pin 7L28, the matrix-block, and the mold from above, and aslong as the matrix-block and the mold make a perfect joint when incasting position the parts will comeinto positions shown in Figs. l, 2,and 7 and the latchlever 7c will remain in itsnormal or inoperativeposition, as shown in Fig. 7. The weight of the long end of thelatch-lever 7c and the spring 7c3 keeps the loose head 7a4 in itsuppermost position and puts the spring 71:0 under sufficient tension tocause the same to hold the rod 705 in an uppermost position in directcontact with the top lever S of the squirt-preventer. Suppose now thatsome obstruction, such as a piece of type-metal z, should intervenebetween the matrix and the mold, as shown in Fig. et, and therebyprevent the matrix and the mold from making a proper joint in castingposition. Then it will necessarily follow that under the cooperation ofthe clamping devices acting on the mold and through the centering'pin7t28 on the matrix block some element thereof will be obliged to yieldin order to permit the cams to complete their normal throws. Thecentering-pin 7r20 is subject to this yielding action or is the memberwhich will move upward, or, more accurately stated, will fail to movedownward to its normal clamping position. Hence the loose head 7x00 willmove upward against the tension from the stiif iat spring h3 as theplunger 7t30 goes downward toits limit, and the upward movement of saidloose head 7L20 will carry with it the short end of the top lever 75S,thereby forcing down the IOO TIO

rod [c5 and through the spring k6 also forcing down the loose block 7a*against the short end of the bottom or latch lever k', thereby throwingthe parts into the position shown in Fig. 8. Otherwise stated, under theaction just described the long end of the lower latch-lever 7a will bethrown upward into the notch 7a of the pump-rod f, thereby preventingany action of the pump. When the clamping devices are released under thefurther movements of the cams, it is of course obvious that the parts ofthe squirt-preventer will resume their normal or idle positions, asshown in Figs. I, 2, and 7.

The purpose of the loose block 7a4 and the intermediate spring t on therod is to provide a yielding part in the squirt-preventer, which willpermit au excess motion on the rod L5 without breaking any of the partsof the squirt-preventer. For example, suppose some obstruction shouldintervene between the matrix-block and the mold of unusually large size.In that event the parts could assume the position shown in Fig. 9, or,otherwise stated, the rod 75 of the squirtpreventer could continue tomove downward after the latch-lever 7.3 had been moved as far aspossible. This yielding part in the squirtpreventer could otherwise belocated so long as the same function was preserved.

From the foregoing statements it will be seen that the squirt-preventeris an extremelysimple attachment, but that it is well adapted to servethe purpose intended. By actual and extensive use I have demonstratedthe eihciency of the device. The device must of course be properly adjusted; but this adjustment is not so fine as to preclude reliableaction. It is only the quads or spacing-type which are hair-spaced, andthe smallest printing-type has a face of two units. This two units offace is the smallest adjustment, or, in other words, the smallest-sizedobstruction requiring notice by the squirt-preventer. The latch-lever 7owill therefore never be thrown up so as to engage with the notch 7c ofthe pump-rod f14 unless an obstruction equal to or greater than thedimension of a two-unit type comes between the matrix and the mold.Itfollows that the squirt-preventer does not interfere with the castingaction whenever the matrix-block and the mold make a perfect joint, butwill always come into play to lock the pump and prevent a cast when sucha perfect joint is not secured.

It will be understood that the construction of the squirt-preventer maybe widely varied in form without departing from the spirit of myinvention. V

It should,perhaps,be noted that in my prior patents pump-locks weredisclosed for certain purposes specied therein. None thereof, however,served the purpose of the squirtpreventer herein disclosed, and nonewere capable of use for this function. One of the locks disclosed in mysaid prior patents operated after every cast to lock the pump with itspiston in its uppermost position under tension from its actuating-springf1T and was subject to an electric trip having` its magnet in the commonreturn branch of the electric connections, which cooperated to set thematrix-block and the mold-plunger, and hence the pump could not operateuntil after the matrix-block and the mold had been so properly set. Thisold lock, although not herein shown,is still used on the machine for thesame purpose as disclosed in my prior patents. In some of my priorpatents-as, for example, the Patent No. 609,098, of August 16, 1898-Ialso disclosed a safety-lock for cooperation with the pivoted supporth4, (which carries the matrix-carriages,) which safetylock was' soconstructed and disposed that when the pivoted support h4 was in itslowermost or operative position said lock would be held in an idleposition; but when said support h4 was turned upward on its pivotalbearings and backward over the side of the machine, so as to expose theface of the mold, the spring of the lock would instantly throw the sameinto au operative position and cause a hook to engage over the end ofthe pumpactuating rod f14 adjacent to the cam-wheel, and thereby renderit impossible for any pump action to take place until after the supporth4 had been again` lowered into its operative position. From thesestatements it will be seen that the pump-locks disclosed in my priorpatents served functions entirely different than the lock for the pumpherein disclosed and which I call the squirt-pre- Venter.77 In otherwords, both of said old locks disclosed in my prior patents are stillused, and the squirt-preventing lock herein disclosed is also added toserve its own special purpose. All three of the locks coperate in theworking machine to prevent any casting action whatever except when theparts are in proper working positions for permitting andsecuringaperfect cast. The addition ofthe squirt-preventer hereindisclosed adds greatly to the efficiency of the machine.

Of course it will be understood that the molten metal4 might be forcedinto the mold in any suitable way. A pump is the means in almostuniversal use for that purpose; but any suitable injecting devices mightbe employed so far as the purposes of the present invention areconcerned. If the melting-pot was at a sufficient height, the moltenmetal might be forced into the mold under the action of gravity underthe control of a suitable regulating-valve, to which the squirtpreventerherein disclosed could then be applied.

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What I claim, and desire to secure by Letters Patent of the UnitedStates, is as follows:

l. In a type-casting machine, the combination with a mold, a matrix andmetal-injecting devices, of a lock for the metal-injecting fail to makea perfect joint, When in casting position, because of the interventionof foreign material between the face of the mold and the face of thematrix, substantially as described. l

2. In a type-casting machine, the combination with a mold, a matrix anda pump, of

clamping devices for clamping together the matrix and the mold incasting position, and a pump-lock subject to said clamping devices andoperative to lock the pump and prevent any cast, in case the matrix andthe mold fail to make a perfect joint, when in casting position, becauseof theintervention of any foreign material between the face of thematrix and the face of the mold, substantially as described.

3. The combination with a matrix, a mold and a pump, of a pump-lock andclamping devices, for clamping together the matrix and the mold incasting position, which clamping devices include a yielding part Which,When the matrix and mold fail to make a perfect joint, in castingposition because of the intervention of any foreign material between thematrix and the mold, will render said pump-lock operative to lock thepump in idle position, and thereby prevent any cast, substantially asdescribed.

4. In a type-casting machine, the combination with a matrix, a mold, apump, and clamping devices for clamping together the matrix and the moldin casting position, of a squirt-preventer including a pump-lock andintermediate devices under the control of the said clamping devices, andoperative to hold the lock in idle position, as longas the matrix andmold make a perfect joint, but to throw said lock into locking position,whenever said perfect joint is prevented by an intervening obstruction,betweenthe matrix andthe mold, substantially as described.

5. In the type casting andsetting machine substantially as described,the combination With the matrix, the mold, the melting-pot and the pump,of the vertically-movable moldcarriage, the cam-actuated devices forforcing the mold-carriage upward into casting position, thematrix-block, the centering-pin 7h28, the loose head his and thecam-actuated plunger o, for clamping the matrix against the face of themold, when in casting position, the pump-actuating rod provided with anotch or other engaging surface thereon, and the squirt preventer,including the elements marked 7c to 758, inclusive, for cooperation,

substantially as described.

In testimony whereof I afx my signature in presence of two witnesses.

GEORGE ARTHUR GOODSON.

Witnesses:

OHAs. E. HUNTER, M. J. LorT.

